Dear ConTeXt folks,


`\dotsb` is not defined although it is defined in AMSTeX (amsmath) [1].

Please find the following minimal example also attached.

        \starttext
        This throws an error, since »\backslash dotsb« is not defined.
        
        \startformula
        	1 + 2 + 3 + \dotsb + n = \frac{n}{2} (n + 1)
        \stopformula
        \stoptext

This is the error.

        […]
        system          > begin file dotsb.tex at line 1
        ! Undefined control sequence.
        
        system          > tex > error on line 5 in file dotsb.tex: Undefined control sequence ...
        
        1     \starttext
        2     This throws an error, since »\backslash dotsb« is not defined.
        3     
        4     \startformula
        5 >>  	1 + 2 + 3 + \dotsb + n = \frac{n}{2} (n + 1)
        6     \stopformula
        7     \stoptext
        8     
        
        l.5 	1 + 2 + 3 + \dotsb
                                + n = \frac{n}{2} (n + 1)
        ?
        […]

Is `\dotsb` not defined intentionally?


Thanks,

Paul


[1] http://en.wikibooks.org/wiki/LaTeX/Mathematics#Introducing_text_and_dots_in_formulas